Bursch S G
Phys Ther. 1987 Jul;67(7):1077-9. doi: 10.1093/ptj/67.7.1077.
Diastasis recti abdominis, or midline separation of the abdominal musculature, has not been investigated scientifically. The purposes of this study were to provide data on the incidence and degree of diastasis recti abdominis, to describe the measurement system used, and to determine the interrater reliability of the measurements performed. Forty subjects less than four days postpartum were tested by four raters. All subjects were measured in a supine, flexed-knee position at a standard point of palpation above the umbilicus. During palpation, each subject performed a partial sit-up, and the rater determined the number of finger widths filling the separation. An analysis of variance for repeated measures revealed a highly significant difference between the measurement scores of the four raters. This measurement system, therefore, was found to be unreliable. All subjects had some degree of diastasis recti abdominis; over 60% had separations significant enough to warrant protective exercises. The author proposes that the incidence and degree of diastasis recti abdominis may be underestimated, that selected components of exercise prescriptions may be contraindicated, and that a reliable instrument for measuring the degree of separation is needed.
腹直肌分离，即腹部肌肉的中线分离，尚未得到科学研究。本研究的目的是提供腹直肌分离的发生率和程度的数据，描述所使用的测量系统，并确定所进行测量的评分者间信度。四名评分者对40名产后不到四天的受试者进行了测试。所有受试者均在仰卧、屈膝位，于脐上标准触诊点进行测量。触诊时，每位受试者进行部分仰卧起坐，评分者确定填充分离处的手指宽度数量。重复测量方差分析显示，四名评分者的测量分数之间存在高度显著差异。因此，发现该测量系统不可靠。所有受试者均有一定程度的腹直肌分离；超过60%的受试者分离程度足以需要进行保护性锻炼。作者提出，腹直肌分离的发生率和程度可能被低估，运动处方的某些组成部分可能禁忌，并且需要一种可靠的测量分离程度的工具。
